Central China bans pearl farming to restore water quality

Pearl farms have covered a total area of 13,000 hectares in the province, and the annual output has exceeded 400 tons, a spokesman with the administration said.

Some farmers resorted to pesticides and manure to farm the pearl oysters, which has caused swathes of algae to bloom in the water, and turned the water stinky, he said.

The administration said it would not approve new applications to establish such farms, and has ordered all water areas used to cultivate pearls to be cleaned.

Over the past several months, blue-green algae outbreaks, usually caused by pesticides runoffs and other pollutants, have been reported in Taihu Lake, Chaohu Lake and the Dianchi Lake in southwestern China, endangering domestic water supplies.

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